var ly=new Array(0,92,184,276,368,460,552);		
var initialisation;
var compt=0;

function init(){
	
	for(n=0;n<7;n++){
		if (document.getElementById("art"+n)){
			if(ly[n]==-84)ly[n]=560; 						
			ly[n]=ly[n]-1;
			document.getElementById("art"+n).style.top=ly[n]+"px";
		}
	}
	
}

function initi()
	{
	compt=1;
	initialisation=setInterval('init()',40);
	clearTimeout(a);
	
	}
	
var a = setTimeout("initi();",5000);